/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "oled.h"
#include "demo.h"
#include "dht11.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
extern DMA_HandleTypeDef hdma_usart2_rx;
/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define RX_BUF_MAX_LEN 1024   //??????????????

uint8_t flag_demo = 0;
uint8_t RXbuff;              
uint8_t Databuff[RX_BUF_MAX_LEN];
uint8_t Data_num;
uint8_t send_state_buf[6] = {0xAA,0x55,0x00,0x00,0x0D,0x0A};
int ch_num = 0;
int temp = 0;
int humi = 0;
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/*                  
    数据帧处理   对象  状态  结束位
                00   01   0D 0A
*/
void su03t_Callback(void){
  flag_demo = 0;
  if(Databuff[0] == 00){
    switch(Databuff[1]){
        case 01:
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_SET);
            Delay_ms(50);
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_RESET);
            Delay_ms(50);
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_SET);
            Delay_ms(50);
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_RESET);
            Delay_ms(50);
            break;
        case 02:
            ch_num = 100;
            on_demo();
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, ch_num);
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, ch_num);
            break;
        case 03:
            ch_num = 0;
            off_demo();
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, ch_num);
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, ch_num);
            break;
        case 04:
            ch_num += 20;
            if(ch_num > 100){
                ch_num = 100;
            }
            on_demo();
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, ch_num);
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, ch_num);
            break;
        case 05:
            ch_num -= 20;
            if(ch_num <= 0){
                ch_num = 0;
                off_demo();
            }
            on_demo();
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, ch_num);
            __HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_4, ch_num);
            break;
    }
  }
  if(Databuff[0] == 01){
    switch(Databuff[1]){
        case 01:
            DHT11_Read_Data(&temp, &humi);
            temp_demo();
            send_state_buf[2] = 01;
            send_state_buf[3] = temp;
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_SET);
            HAL_UART_Transmit(&huart2, send_state_buf, 6, 100);
            break;
        case 02:
            DHT11_Read_Data(&temp, &humi);
            temp_demo();
            send_state_buf[2] = 02;
            send_state_buf[3] = humi;
            HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_RESET);
            HAL_UART_Transmit(&huart2, send_state_buf, 6, 100);
            break;
    }
  }
  HAL_UART_Receive_IT(&huart2,&RXbuff,1);
  Data_num=0;					
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART2_UART_Init();
  MX_TIM3_Init();
  /* USER CODE BEGIN 2 */

/*                  
    初始化DHT11温湿度传感器、OLED显示
    开启pwm、使能串口接收中断
*/
  DHT11_Init();
  OLED_Init();
  OLED_ColorTurn(0);
  OLED_DisplayTurn(0);
  DHT11_Read_Data(&temp, &humi);
  start_demo();
  temp_demo();
  
  HAL_TIM_PWM_Start(&htim3,TIM_CHANNEL_3);
  HAL_TIM_PWM_Start(&htim3,TIM_CHANNEL_4);

  HAL_UART_Receive_IT(&huart2,&RXbuff,1); 
  __HAL_UART_CLEAR_IDLEFLAG(&huart2);			
  __HAL_UART_ENABLE_IT(&huart2,UART_IT_IDLE);
    

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
/*                  
    串口接收中断标志位 当串口接收数据帧完成，标志位置1执行su03t_Callback()
*/
      while(flag_demo == 0){
        DHT11_Read_Data(&temp, &humi);
        temp_demo();
        HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_6);
        Delay_ms(50);
      }
      su03t_Callback();
    
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/*                  
    串口接收回调 一个字节一个字节传送
*/
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance == USART2) 						 //�ж��Ƿ��Ǵ���2
	{
		Databuff[Data_num++]=RXbuff;  					//�����յ���һ�ֽ����ݱ��浽������
		HAL_UART_Receive_IT(&huart2,&RXbuff,1); //׼����һ�ν���
	}
    
}
/*                  
    串口空闲接收回调 检测是否接收完成数据帧 完成标志位置1
*/
void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance == USART2) 						//�ж��Ƿ��Ǵ���2
	{
        flag_demo = 1;
	}
    
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
